/Engine/Source/Runtime/Core/Public/Templates/SharedPointerInternals.h
Assignment operator from a shared reference counter. If this counter was previously referencing an object, that reference will be released.
[FWeakReferencer](API\Runtime\Core\Templates\FWeakReferencer) & operator= ( [FSharedReferencer](API\Runtime\Core\Templates\FSharedReferencer)< Mode > const & InSharedReference )